Submission #209416

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
209416	2020-03-14T07:19:21 Z	model_code	Mountains (NOI20_mountains)	C++17	100 / 100	149 ms	13308 KB

Mountains

#include<bits/stdc++.h>
using namespace std;
int fw[300001], cnt = 1;
void update(int x, int v){
	for(; x <= cnt; x += x&-x) fw[x] += v;
}
int query(int x){
	int ret = 0;
	for(; x; x -= x&-x) ret += fw[x];
	return ret;
}

long long invLeft[300001], invRight[300001];
pair<long long, int> disArr[300001];
long long solve(int n, long long H[]){
	for(int i = 1; i <= n; i++) disArr[i] = {H[i], i};
	sort(disArr + 1, disArr + n + 1);

	for(int i = 1; i <= n; i++){
		if (i > 1 && disArr[i].first != disArr[i-1].first) cnt++;
		H[disArr[i].second] = cnt;
	}
	
	for(int i = 1; i <= n; i++){
		invLeft[i] = query(H[i] - 1);
		update(H[i], 1);
	}
	
	fill(fw, fw + n + 1, 0);
	for(int i = n; i > 0; i--){
		invRight[i] = query(H[i] - 1);
		update(H[i], 1);
	}
	
	long long total = 0;
	for(int i = 1; i <= n; i++){
		total += invLeft[i] * invRight[i];
	}
	
	return total;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	long long H[300001];
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> H[i];
	long long total = solve(n, H);
	cout << total;
	return 0;
}

Subtask #1
2.0 / 2.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	106 ms	13304 KB	Output is correct
3	Correct	105 ms	13176 KB	Output is correct
4	Correct	100 ms	13176 KB	Output is correct
5	Correct	120 ms	13304 KB	Output is correct
6	Correct	106 ms	13304 KB	Output is correct
7	Correct	101 ms	13176 KB	Output is correct
8	Correct	109 ms	13304 KB	Output is correct
9	Correct	103 ms	13280 KB	Output is correct
10	Correct	120 ms	13228 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	60 ms	13304 KB	Output is correct
2	Correct	67 ms	13192 KB	Output is correct
3	Correct	70 ms	13280 KB	Output is correct
4	Correct	64 ms	13280 KB	Output is correct
5	Correct	78 ms	13304 KB	Output is correct
6	Correct	62 ms	13304 KB	Output is correct
7	Correct	59 ms	13304 KB	Output is correct
8	Correct	46 ms	13176 KB	Output is correct
9	Correct	56 ms	13304 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct

Subtask #3
9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	60 ms	13304 KB	Output is correct
2	Correct	67 ms	13192 KB	Output is correct
3	Correct	70 ms	13280 KB	Output is correct
4	Correct	64 ms	13280 KB	Output is correct
5	Correct	78 ms	13304 KB	Output is correct
6	Correct	62 ms	13304 KB	Output is correct
7	Correct	59 ms	13304 KB	Output is correct
8	Correct	46 ms	13176 KB	Output is correct
9	Correct	56 ms	13304 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	87 ms	13284 KB	Output is correct
12	Correct	147 ms	13280 KB	Output is correct
13	Correct	80 ms	13232 KB	Output is correct
14	Correct	88 ms	13176 KB	Output is correct
15	Correct	75 ms	13176 KB	Output is correct
16	Correct	79 ms	13176 KB	Output is correct
17	Correct	77 ms	13176 KB	Output is correct
18	Correct	46 ms	13176 KB	Output is correct
19	Correct	46 ms	13176 KB	Output is correct
20	Correct	5 ms	376 KB	Output is correct

Subtask #4
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	6 ms	352 KB	Output is correct
3	Correct	5 ms	376 KB	Output is correct
4	Correct	5 ms	376 KB	Output is correct
5	Correct	5 ms	380 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	376 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct

Subtask #5
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	6 ms	352 KB	Output is correct
3	Correct	5 ms	376 KB	Output is correct
4	Correct	5 ms	376 KB	Output is correct
5	Correct	5 ms	380 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	376 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	13 ms	760 KB	Output is correct
12	Correct	14 ms	760 KB	Output is correct
13	Correct	8 ms	760 KB	Output is correct
14	Correct	15 ms	760 KB	Output is correct
15	Correct	9 ms	760 KB	Output is correct
16	Correct	8 ms	760 KB	Output is correct
17	Correct	10 ms	760 KB	Output is correct
18	Correct	8 ms	760 KB	Output is correct
19	Correct	7 ms	760 KB	Output is correct
20	Correct	6 ms	376 KB	Output is correct

Subtask #6
9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	60 ms	13304 KB	Output is correct
2	Correct	67 ms	13192 KB	Output is correct
3	Correct	70 ms	13280 KB	Output is correct
4	Correct	64 ms	13280 KB	Output is correct
5	Correct	78 ms	13304 KB	Output is correct
6	Correct	62 ms	13304 KB	Output is correct
7	Correct	59 ms	13304 KB	Output is correct
8	Correct	46 ms	13176 KB	Output is correct
9	Correct	56 ms	13304 KB	Output is correct
10	Correct	5 ms	376 KB	Output is correct
11	Correct	87 ms	13284 KB	Output is correct
12	Correct	147 ms	13280 KB	Output is correct
13	Correct	80 ms	13232 KB	Output is correct
14	Correct	88 ms	13176 KB	Output is correct
15	Correct	75 ms	13176 KB	Output is correct
16	Correct	79 ms	13176 KB	Output is correct
17	Correct	77 ms	13176 KB	Output is correct
18	Correct	46 ms	13176 KB	Output is correct
19	Correct	46 ms	13176 KB	Output is correct
20	Correct	5 ms	376 KB	Output is correct
21	Correct	98 ms	13308 KB	Output is correct
22	Correct	108 ms	13176 KB	Output is correct
23	Correct	98 ms	13304 KB	Output is correct
24	Correct	100 ms	13176 KB	Output is correct
25	Correct	100 ms	13272 KB	Output is correct
26	Correct	99 ms	13176 KB	Output is correct
27	Correct	98 ms	13176 KB	Output is correct
28	Correct	64 ms	13176 KB	Output is correct
29	Correct	65 ms	13176 KB	Output is correct
30	Correct	5 ms	376 KB	Output is correct

Subtask #7
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	106 ms	13304 KB	Output is correct
3	Correct	105 ms	13176 KB	Output is correct
4	Correct	100 ms	13176 KB	Output is correct
5	Correct	120 ms	13304 KB	Output is correct
6	Correct	106 ms	13304 KB	Output is correct
7	Correct	101 ms	13176 KB	Output is correct
8	Correct	109 ms	13304 KB	Output is correct
9	Correct	103 ms	13280 KB	Output is correct
10	Correct	120 ms	13228 KB	Output is correct
11	Correct	60 ms	13304 KB	Output is correct
12	Correct	67 ms	13192 KB	Output is correct
13	Correct	70 ms	13280 KB	Output is correct
14	Correct	64 ms	13280 KB	Output is correct
15	Correct	78 ms	13304 KB	Output is correct
16	Correct	62 ms	13304 KB	Output is correct
17	Correct	59 ms	13304 KB	Output is correct
18	Correct	46 ms	13176 KB	Output is correct
19	Correct	56 ms	13304 KB	Output is correct
20	Correct	5 ms	376 KB	Output is correct
21	Correct	87 ms	13284 KB	Output is correct
22	Correct	147 ms	13280 KB	Output is correct
23	Correct	80 ms	13232 KB	Output is correct
24	Correct	88 ms	13176 KB	Output is correct
25	Correct	75 ms	13176 KB	Output is correct
26	Correct	79 ms	13176 KB	Output is correct
27	Correct	77 ms	13176 KB	Output is correct
28	Correct	46 ms	13176 KB	Output is correct
29	Correct	46 ms	13176 KB	Output is correct
30	Correct	5 ms	376 KB	Output is correct
31	Correct	5 ms	376 KB	Output is correct
32	Correct	6 ms	352 KB	Output is correct
33	Correct	5 ms	376 KB	Output is correct
34	Correct	5 ms	376 KB	Output is correct
35	Correct	5 ms	380 KB	Output is correct
36	Correct	5 ms	376 KB	Output is correct
37	Correct	5 ms	376 KB	Output is correct
38	Correct	5 ms	376 KB	Output is correct
39	Correct	5 ms	376 KB	Output is correct
40	Correct	5 ms	376 KB	Output is correct
41	Correct	13 ms	760 KB	Output is correct
42	Correct	14 ms	760 KB	Output is correct
43	Correct	8 ms	760 KB	Output is correct
44	Correct	15 ms	760 KB	Output is correct
45	Correct	9 ms	760 KB	Output is correct
46	Correct	8 ms	760 KB	Output is correct
47	Correct	10 ms	760 KB	Output is correct
48	Correct	8 ms	760 KB	Output is correct
49	Correct	7 ms	760 KB	Output is correct
50	Correct	6 ms	376 KB	Output is correct
51	Correct	98 ms	13308 KB	Output is correct
52	Correct	108 ms	13176 KB	Output is correct
53	Correct	98 ms	13304 KB	Output is correct
54	Correct	100 ms	13176 KB	Output is correct
55	Correct	100 ms	13272 KB	Output is correct
56	Correct	99 ms	13176 KB	Output is correct
57	Correct	98 ms	13176 KB	Output is correct
58	Correct	64 ms	13176 KB	Output is correct
59	Correct	65 ms	13176 KB	Output is correct
60	Correct	5 ms	376 KB	Output is correct
61	Correct	124 ms	13176 KB	Output is correct
62	Correct	128 ms	13176 KB	Output is correct
63	Correct	126 ms	13176 KB	Output is correct
64	Correct	147 ms	13176 KB	Output is correct
65	Correct	130 ms	13176 KB	Output is correct
66	Correct	130 ms	13176 KB	Output is correct
67	Correct	130 ms	13176 KB	Output is correct
68	Correct	149 ms	13176 KB	Output is correct
69	Correct	97 ms	13176 KB	Output is correct
70	Correct	5 ms	376 KB	Output is correct

Submission #209416

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0